叙事描述作为阿尔茨海默病认知功能测量指标的进一步评估。

IF 2.6 3区 心理学 Q3 NEUROSCIENCES Neuropsychology Pub Date : 2023-10-01 Epub Date: 2022-12-22 DOI:10.1037/neu0000884
Stephanie M Reeves, Victoria Williams, Deborah Blacker, Russell L Woods
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引用次数: 0

摘要

目的:叙事描述(ND)测试客观地衡量理解和描述视觉场景的能力。由于言语的细微差异发生在认知能力下降的早期,我们分析了语言特征在检测认知障碍和预测下游下降方面的效用。方法:认知正常至轻度痴呆的参与者(n=52)进行ND测试(观看20个30秒的视频片段并描述视觉内容)。对认知功能进行了长达5年的随访。我们计算了简单的语言特征,如内容效率、语速、词性和唯一字数。我们研究了(a)认知状态与ND评分和语言特征之间的关系;(b) 利用ND评分和语言特征区分早期认知障碍和正常认知的能力;以及(c)ND评分和语言特征是否与未来认知功能下降有关。结果:许多语言特征量表都与认知状态有关。许多语言特征可以区分认知正常组、轻度认知障碍组和痴呆组。单独ND评分的曲线下面积(AUC)为0.74,当加上平均单词长度时,曲线下面积无显著增加至0.78。在第一次就诊时主观认知能力下降(SCD)的参与者中,较少的单词加上更多的感叹词或基线时较低的ND分数可以预测未来的认知能力下降。结论:虽然许多语言特征与认知状态有关,有些特征能够检测早期认知障碍或预测未来认知能力下降,但我们测试的所有特征似乎都被ND评分所捕获。因此,在ND测试分数中增加语言测量并没有增加其在评估当前或预测未来认知状态方面的价值。(PsycInfo数据库记录(c)2023 APA,保留所有权利)。
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Further evaluation of narrative description as a measure of cognitive function in Alzheimer's disease.

Objective: The narrative description (ND) test objectively measures the ability to understand and describe visual scenes. As subtle differences in speech occur early in cognitive decline, we analyzed linguistic features for their utility in detecting cognitive impairment and predicting downstream decline.

Method: Participants (n = 52) with normal cognition to mild dementia performed the ND test (watched twenty 30-s video clips and described the visual content). Cognitive function was followed for up to 5 years. We computed simple linguistic features such as content efficiency, speech rate, and part of speech and unique word counts. We examined (a) relationships between cognitive status and ND score and linguistic features; (b) ability to discriminate early cognitive impairment from normal cognition using ND score and linguistic features; and (c) whether ND score and linguistic features were associated with future cognitive functional decline.

Results: Many of the linguistic-feature metrics were related to cognitive status. Many of the linguistic features could distinguish between the cognitively normal group and the mild cognitive impairment (MCI) and Dementia groups. The area under the curve (AUC) for ND score alone was 0.74, with a nonsignificant increase to 0.78 when adding mean word length. Among participants with subjective cognitive decline (SCD) at the first visit, a smaller number of words plus more interjections or a lower ND score at baseline were predictive of future cognitive decline.

Conclusions: While many linguistic features were associated with cognitive status, and some were able to detect early cognitive impairment or predictive of future cognitive decline, all the features we tested seem to have been captured by the ND score. Thus, adding linguistic measures to the ND test score did not add to its value in assessing current or predicting future cognitive status. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

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来源期刊
Neuropsychology
Neuropsychology 医学-神经科学
CiteScore
4.10
自引率
4.20%
发文量
132
审稿时长
6-12 weeks
期刊介绍: Neuropsychology publishes original, empirical research; systematic reviews and meta-analyses; and theoretical articles on the relation between brain and human cognitive, emotional, and behavioral function.
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